Christina Aguilera certainly knows how to turn heads. The singer showed off her new body in a curve-hugging pink dress at a recent NBC press event in Beverly Hills as she will be rejoining The Voice again for next season.

The Voice judge proved that diet and exercise can make all the difference. Aguilera's weight loss was on full display as she made her way down the red carpet on Saturday (July 27).

How did she managed to pull off such a remarkable transformation? An anonymous source explained to Us Weekly that Christina Aguilera had the drive and the desire to get back in shape. To make that happen, the singer reportedly watched what she ate and regularly hit the gym.

"It's more of a mind-body thing for her. She believes in exercise that she enjoys, doing strength work as opposed to intense cardio," the insider revealed.

Another source told E! Online that Christina Aguilera is devoted to living a much healthier lifestyle. This has reportedly helped her shed those unwanted pounds.

"[She's] making herself a priority, trying new exercises and trying things she loves and enjoys rather than stuff to just lose weight. This is really from the inside out," the unidentified individual explained to the website.

The singer also revealed why she decided to take a short break from The Voice. Aguilera explained during the Television Critics Association press tour that she simply cannot live in front of the cameras all the time.

"I have to take breaks and stay connected with myself. I think it's important so that I can then be [my] best on camera and find [my] own happiness with it," she said.

The singer added, "I'm a mom and [when] the cameras go off, I go home, I put on sweats and a T-shirt. The red lips come off. I check out and I'm mom and I needed some time, I needed some time to do that."